Open in app
Sign inGet started
Ask Ethan: Why don’t neutron stars decay?

Ask Ethan: Why don’t neutron stars decay?

Neutrons can be stable when bound into an atomic nucleus, but free neutrons decay away in mere minutes. So how are neutron stars stable?
Go to the profile of Ethan Siegel
Ethan Siegel
Could dark matter be made of gravitons?

Could dark matter be made of gravitons?

Dark matter hasn’t been directly detected, but some form of invisible matter is clearly gravitating. Could the graviton hold the answer?
Go to the profile of Ethan Siegel
Ethan Siegel
Astronomers spot the first “bounce” in our Universe

Astronomers spot the first “bounce” in our Universe

A spherical structure nearly one billion light-years wide has been spotted in the nearby Universe, dating all the way back to the Big Bang.
Go to the profile of Ethan Siegel
Ethan Siegel
The grand paradox at the heart of every black hole

The grand paradox at the heart of every black hole

The matter that creates black holes won’t be what comes out when they evaporate. Will the black hole information paradox ever be solved?
Go to the profile of Ethan Siegel
Ethan Siegel
Did JWST plus ALMA just reveal how pulsars form?

Did JWST plus ALMA just reveal how pulsars form?

In 1987, the closest supernova directly observed in nearly 400 years occurred. Will a pulsar will arise from those ashes? JWST offers…
Go to the profile of Ethan Siegel
Ethan Siegel
About Starts With A Bang!Latest StoriesArchiveAbout MediumTermsPrivacyTeams